Lillian “Lilly” Rush is the main character of Cold Case, portrayed by
Kathryn Morris. She is Philadelphia’s first female homicide detective specializing
in solving cold cases alongside her partner, Scotty Valens. Lilly is deeply
dedicated to justice, believing that all victims deserve to be remembered.
Raised in poverty by an alcoholic mother, Lilly had a traumatic childhood. Her father
abandoned the family, and she suffered a violent attack as a child. These
experiences left her with significant trust issues, affecting her relationships,
particularly with men.
At work, Lilly is highly skilled, known for her interrogations and relentless pursuit
of justice, surviving multiple life-threatening incidents throughout the series.
Scotty Valens
Scotty Valens is a Philadelphia homicide detective who joined in 2003 as Lilly Rush’s
partner. Born to Cuban immigrants, he idolized his older brother and began his
career in undercover work. Despite personal tragedies, Scotty earned his squad’s
respect through dedication and loyalty.
Kat Miller
Kat Miller joined the homicide squad in 2005 after undercover work in narcotics. She
balances her demanding career with single motherhood and has overcome
life-threatening injuries in the line of duty.
Nick Vera
Detective Nick Vera, a skilled investigator since 1989, is known for his tenacity in
solving difficult cases, including high-profile rapes. His personal commitment to
justice is shaped by early unsolved cases.
John Stillman
Lieutenant John Stillman leads the cold case squad with a stern but caring hand. A
Vietnam veteran, he has balanced personal sacrifices and a deep commitment to his
team, briefly retiring before returning to duty.
Will Jeffries
Detective Will Jeffries, the squad’s senior member, brings life experience from
Vietnam and a personal mission for justice after losing his wife in a hit‑and‑run,
shaping his dedication to the community.
Chris Lassing
Chris “Lass” Lassing, Lilly’s original partner, struggled with the intensity of cold
cases and later transferred out due to health concerns, making way for Scotty
Valens.
Character Connections
This diagram illustrates the relationships among the main characters in the
series.
